[PATCH 9/9] docs: conf.py: get rid of the now unused kerneldoc_bin env var

[Mauro Carvalho Chehab <mchehab+huawei@kernel.org>]

In the past, this contained the location of the binary file to parse
kernel-doc. Nowadays, it is used only for debugging purposes, inside
kerneldoc.py extension.

Move it to sphinx/kerneldoc.py, to avoid needing to handle with it
on several places.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/conf.py             | 4 ----
 Documentation/sphinx/kerneldoc.py | 7 +++++--
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/Documentation/conf.py b/Documentation/conf.py
index 383d5e5b9d0a..65df81a9e414 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -579,10 +579,6 @@ pdf_documents = [
     ("kernel-documentation", "Kernel", "Kernel", "J. Random Bozo"),
 ]
 
-# kernel-doc extension configuration for running Sphinx directly (e.g. by Read
-# the Docs). In a normal build, these are supplied from the Makefile via command
-# line arguments.
-kerneldoc_bin = "../tools/docs/kernel-doc"  # Not used now
 kerneldoc_srctree = ".."
 
 def setup(app):
diff --git a/Documentation/sphinx/kerneldoc.py b/Documentation/sphinx/kerneldoc.py
index afbab458550a..c1cadb4eb099 100644
--- a/Documentation/sphinx/kerneldoc.py
+++ b/Documentation/sphinx/kerneldoc.py
@@ -47,6 +47,10 @@ sys.path.insert(0, os.path.join(srctree, "tools/lib/python"))
 from kdoc.kdoc_files import KernelFiles
 from kdoc.kdoc_output import RestFormat
 
+# Used when verbose is active to show how to reproduce kernel-doc
+# issues via command line
+kerneldoc_bin = "tools/docs/kernel-doc"
+
 __version__  = '1.0'
 kfiles = None
 logger = logging.getLogger(__name__)
@@ -95,7 +99,7 @@ class KernelDocDirective(Directive):
     def handle_args(self):
 
         env = self.state.document.settings.env
-        cmd = [env.config.kerneldoc_bin, '-rst', '-enable-lineno']
+        cmd = [kerneldoc_bin, '-rst', '-enable-lineno']
 
         filename = env.config.kerneldoc_srctree + '/' + self.arguments[0]
 
@@ -257,7 +261,6 @@ def setup_kfiles(app):
 
 
 def setup(app):
-    app.add_config_value('kerneldoc_bin', None, 'env')
     app.add_config_value('kerneldoc_srctree', None, 'env')
     app.add_config_value('kerneldoc_verbosity', 1, 'env')
 
-- 
2.52.0